Seongnam Weather in July
Seongnam in July averages 30°C (86°F) during the day and 22°C (72°F) at night. This is the wettest month of the year.
Rainfall in Seongnam in July
During this month, the rain comes down heavily. A poncho is essential for staying dry. Historically, the month has about 16 days of rain, averaging 324 mm (13 in) in total. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Seongnam in July
Daytime highs in Seongnam in July reach 30°C (86°F), with nights around 22°C (72°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 22°C (72°F), evenings stay pleasantly warm.
Sunshine in Seongnam in July
You can expect a moderate amount of sunlight, with approximately 124 hours. This means a pleasant mix of sun and overcast.
Wind Speed in Seongnam in July
July sees wind speeds averaging 2 m/s (4 knots). You'll typically experience pleasant light breezes that move leaves slightly and feel refreshing. As an average, expect variation from very calm days to periods with more apparent air movement.July in Seongnam can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Korea, check out our Seongnam's climate page.
Seongnam Temperature in July
Min Temperature
22°C (72°F)
Max Temperature
30°C (86°F)
Chance of Rain
53%
Precipitation
324 mm (13 in)
Rainy days
16 days
Humidity
77% *
Windspeed
2 m/s (4 knots) *
Sunshine
124 hours *
Percentage Sunshine
27% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Seongnam typically stay consistent throughout July, with daily highs averaging around 30°C (86°F). Nights are warm, with lows typically ranging from 20°C (68°F) to 24°C (75°F).
Average temperatures in July
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather for Seongnam in July
Browse day-by-day weather records for Seongnam spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Seongnam historical weather extremes in July
Based on 49 years of weather observations in Seongnam between 1976 and 2025, these are the recorded extremes.
- Seongnam recorded its highest July temperature of 38°C (100°F) on July 8, 2025.
- The lowest daytime temperature in July was 16°C (61°F), recorded on July 3, 1976.
- Nighttime temperatures dropped to 13°C (55°F) on July 22, 1993, marking the coldest July night on record.
Best Places in South Korea in July
Find out more about the weather in South Korea and which places have the best travel conditions in this month. See all of South Korea in July →
perfect weather
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tolerable
unpleasant
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What to Wear in Seongnam in July
Warm weather calls for comfortable, breathable clothing in July. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Seongnam in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Korea, check out our Seongnam's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Seongnam climate overview or explore weather in South Korea.
